UCC3807D-1

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UCC3807D-1

Programmable Maximum Duty Cycle PWM Controller

Packaging

Package | PIN: D | 8
Temp: C (0 to 70)
Carrier: Partial Tube
Qty Price
1-9 $4.34
10-24 $3.91
25-99 $3.64
100-249 $3.19
250-499 $2.99
500-749 $2.54
750-999 $2.14
1000+ $2.05

Features

  • User Programmable Maximum PWMDuty Cycle
  • 100-A Startup Current
  • Operation to 1 MHz
  • Internal Full Cycle Soft Start
  • Internal Leading Edge Blanking of Current Sense Signal
  • 1-A Totem Pole Output

Texas Instruments  UCC3807D-1

The UCC3807 family of high speed, low power integrated circuits contains all of the control and drive circuitry required for off-line and dc-to-dc fixed frequency current mode switching power supplies with minimal external parts count.

These devices are similar to the UCC3800 family, but with the added feature of a user programmable maximum duty cycle. Oscillator frequency and maximum duty cycle are programmed with two resistors and a capacitor. The UCC3807 family also features internal full cycle soft start and internal leading edge blanking of the current sense input.

The UCC3807 family offers a variety of package options, temperature range options, and choice of critical voltage levels. The family has UVLO thresholds and hysteresis levels for off-line and battery powered systems. Thresholds are shown in the table below.